How do you extend cutting cord on ryobi strimmer?

To extend the cutting cord on a Ryobi strimmer, first ensure the strimmer is turned off and unplugged for safety. Locate the spool cover and remove it by pressing the tabs or unscrewing it, depending on the model. Then, pull out the existing cord, and if needed, feed new cutting line through the spool according to the manufacturer's specifications, winding it in the correct direction. Finally, reattach the spool cover and trim any excess line to the desired length.